commit 8d0a83565a2b8e0ee2b7e6cab93c6ba7b5a58224
parent f1f8dd91bc4e8b58972f17416b664f3a950092cd
Author: rsc <rsc>
Date: Tue, 14 Aug 2007 18:46:29 +0000
formatting, sleep bug fix
Diffstat:
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/ide.c b/ide.c
@@ -29,6 +29,7 @@ struct ide_request {
void *addr;
uint nsecs;
uint read;
+ int done;
};
static struct ide_request request[NREQUEST];
@@ -40,6 +41,7 @@ static int disk_queue;
static int ide_probe_disk1(void);
+//PAGEBREAK: 10
// Wait for IDE disk to become ready.
static int
ide_wait_ready(int check_error)
@@ -91,6 +93,7 @@ void
ide_intr(void)
{
acquire(&ide_lock);
+ request[tail].done = 1;
wakeup(&request[tail]);
release(&ide_lock);
}
@@ -119,6 +122,7 @@ ide_start_request (void)
}
}
+//PAGEBREAK: 30
// Run an entire disk operation.
void
ide_rw(int diskno, uint secno, void *addr, uint nsecs, int read)
@@ -140,13 +144,15 @@ ide_rw(int diskno, uint secno, void *addr, uint nsecs, int read)
r->nsecs = nsecs;
r->diskno = diskno;
r->read = read;
+ r->done = 0;
head = (head + 1) % NREQUEST;
// Start request if necessary.
ide_start_request();
// Wait for request to finish.
- sleep(r, &ide_lock);
+ while(!r->done)
+ sleep(r, &ide_lock);
// Finish request.
if(read){